code: def init_shelf():
      global s
      s = Shelf(-200)
      vals = (4, 2, 8, 9, 1, 5, 10, 3, 7, 6)
      for i in vals:
          s.push(Block(i))
  
imports: from turtle import *
  import random
label_desc: Use image node_id 10 for calling a global function with example usage: init_shelf() without return types